Saltwater Fish
Ctenochaetus strigosus
Ctenochaetus strigosus
(Kole Tang)

Species Description…

Scientific Name: Ctenochaetus strigosus
Common Name: Kole Tang
Species Group: Surgeonfish
Habitat: Reef Safe
Care Level: Beginner
Temperament: Peaceful
Diet Type: Herbivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 7 (inches)
Min Aquarium Size: 75 (gallons)
Native Range: Central and Western Pacific, including Hawaii
Ctenochaetus Strigosus - The Kole Tang

Ctenochaetus Strigosus (The Kole Tang)

Overview

  • Native to the Pacific Ocean, commonly found in shallow coral reefs and rocky coastlines.
  • Recognized by its oval-shaped body, brownish coloration, and fine horizontal stripes across its body.
  • One of the best algae-eating tangs, known for its ability to control nuisance algae in aquariums.
  • A peaceful species that thrives in well-maintained reef tanks with live rock and plenty of grazing surfaces.
  • Best suited for aquariums with stable water conditions, open swimming space, and a well-established ecosystem.

Feeding

  • Herbivorous, primarily grazing on filamentous algae, diatoms, and detritus in the wild.
  • Requires a diet rich in marine-based algae such as nori, spirulina, and high-quality herbivore pellets.
  • Readily accepts prepared foods but should have constant access to grazing material.
  • Should be fed multiple times per day to maintain energy levels and support natural feeding behaviors.
  • A varied diet ensures proper digestion, enhances coloration, and promotes long-term health.

Habitat

  • Prefers coral reef environments with moderate to strong water flow.
  • Frequently seen grazing on rock surfaces, scraping algae and detritus with its specialized bristle-like teeth.
  • Aquarium setups should include live rock to support natural foraging behavior.
  • Requires excellent water quality and stable parameters to thrive.
  • Providing shaded areas and open swimming space encourages natural activity.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C) for maintaining overall health.
  • Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
  • Requires regular water changes and strong filtration to ensure clean water conditions.
  • Reef-safe and does not pose a threat to corals or invertebrates.
  • Providing high oxygen levels and proper tank circulation supports its active swimming habits.

Compatibility

  • Generally peaceful but may show territorial behavior towards other tangs, especially of similar species.
  • Compatible with clownfish, wrasses, gobies, and other reef-safe fish.
  • Best introduced as the only tang in the aquarium unless housed in a very large system.
  • Should not be housed with highly aggressive fish that may stress it or compete for food.
  • Providing plenty of rockwork and grazing surfaces reduces stress and territorial disputes.

Aquarium Behavior

  • An active swimmer that spends most of its time grazing on rock surfaces.
  • Frequently observed scraping algae off rocks using its specialized teeth.
  • More confident in a well-structured environment with abundant grazing opportunities.
  • Providing live rock and a stable ecosystem encourages natural foraging behavior.
  • Over time, it may become accustomed to its caretaker and display curiosity during feeding times.